2779C Datasheet, PDF (1/2 Pages) Bel Fuse Inc. – HIGH FREQUENCY MAGNETICS T1/E1Surface Mount Transformers

HIGH FREQUENCY MAGNETICS
T1/E1Surface Mount Transformers
TM00137
• Operate at the T1 rate of 1.544 Mbits/s and at the E1
rate of 2.048 Mbits/s
• Designed for transmit and receive line interface
applications
• 1500 Volt isolation
• Operating temperature range: -40° C to +85° C
• Meets IEC 695, 2-2 flammability requirements
• PWB Process Capability: standard printed wiring board
assembly techniques, total-immersion cleaning
• Reliability testing: Shock, vibration, temperature cycling,
temperature - humidity - bias
ELECTRICAL SPECIFICATIONS AT 25° C
Part Number
Nominal
Turns Ratio
±2%
(4-1):(5-8)¹
2779C
1 : 1.36CT
2779J
1 : 1.07CT
1. connect 6 to 7
2. measured at 10 kHz, 0.1 Vac
3. measured at 100 kHz, 0.1 Vac
4. measured at 1 kHz, 1 Vac
Inductance²
mH min
(4-1)
1.0
1.3
DCR
Ω
max
(4-1)
(5-8)¹
0.85
1.30
0.60
1.10
Leakage
Inductance³
µH max
(4-1)¹
0.70
0.80
Interwinding
Capacitance⁴
pF
(4-1) & (5-8)¹
Minimum
Interwinding
Breakdown
Voltage
Vrms
25 max
20 typ
1500
1500
SCHEMATIC
2779C
2779J
4
5
6
7
1
8
1:N
©2000 Bel Fuse Inc. Specifications subject to change without notice. 09.00
Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
T1-83